Before I visit a doctor, anyone know what is wrong with me?

Despite the name, I’m female. Inside joke.

So this morning I woke up and just felt horrible. My stomach was killing me and I ended up with the runs for the majority of my morning. I even had to vomit once. My body has felt drained all day because of which. And later in the day I grew a major headache that has yet to leave me. To top it off, I had a sharp heart pain for a few minutes as well. As of now only the headache, fatigue and stomach pains remain.

But this past whole week I’ve been feeling rather sick as well. It’s somewhat cold down here, but I’ve been feeling figuratively ten times colder then I ever had at these temperatures. And I think the fatigue has been there all week as well.

So list of symptoms:
-Headache
-Nausea
-Stomach Ache
-Fatigue
-Really…cold?

So I have some theories but I’m not sure.
-I made potato soup yesterday and my friends think that may be the cause. Food poisoning of some sort, or maybe my stomach just can’t handle it.
-Me and my boyfriend have unprotected sex. He doesn’t ejaculate in me but pre-ejaculate is an issue especially since he tends to “poke” rather deeply in me. So I’m wondering if I’m pregnant maybe. My period is due soon and I have been feeling cramps and a bit bitchy, but that could be caused by pregnancy as well. Our last session was on Thursday. But have done it on several other days of the week as well.
-My kitten scratched me. A deep, long scratch. Heard that those kind of scratches can cause illness. This happened on Thursday as well. (The 18th)
-It might be a stomach flu.

Any help would be appreciated. I have an appointment for Thursday but my curiosity is wandering right now.